Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"tran shan dan slippers" » "tran han dan slippers", "tran nhan dan slippers", "tran thanh dan slippers", "tran phan dang slippers", "tran nhan dang slippers", "tran shan dan slippery", "tran shan dan grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung java java snippets") or ("tran shan dan slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("tran shan dan slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( tran shan dan slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("tran shan dan slippers"))) or ("locating bug code snippets"))*.